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ECS Potting Work Instruction

By Herbert Greene,2014-07-13 07:37
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ECS Potting Work Instruction

ECS Housing Work Instruction

Objective: Measure the gap distance between the bond pad and the molded

    material.

Cross-sectioning

    Steps Action Comments

    1 Perform the cross-sectioning on line A, ; Ensure part is clamp tight

    B and C of Pad1 as shown in figure 1. to the clamp jig before

    sectioning.

    ; Part must be clamp level

    before sectioning.

2 Repeat the above steps for cavity 2, 3

    and 4.

    3 Remove the terminal leads and the

    remaining shroud material with a cutter.

    5 Perform the cross-sectioning on line A, ; Ensure part is clamp tight

    B and C of Pad 2 as shown in figure 1a. to the clamp jig before

    sectioning.

    ; Part must be clamp level

    before sectioning.

6 Repeat the above step 2 and 3 for

    cavity 2, 3 and 4.

    ECS Housing Work Instruction

    Potting

    Step Action Comments 1 Pour the Co-Cast resin in the

    measuring cup.

    2 Add the Co-Cast Hardener into the ; The ratio of the resin (ml) to

    measuring cup. hardener (drops) is 5:1 3 Stir mixture for 2 minutes. ; Stir slowly to prevent air

    bubbles from forming. 4 Place part in the molded cup. Pour

    mixture into the cup until the cup is

    filled.

    5 Leave the mixture to solidify (1 hr

    min.).

    6 Remove the part from the molded

    cup.

    7 Start grinding from the side of the ; Use P320 sandpaper.

    bond pad until the whole terminal is

    seen.

    8 Repeat step 7 for the remaining

    parts.

    9 Grind part surface to obtain a ; Use P600 follow by P1000

    smoother texture by using finer then P4000 sandpaper

    sandpaper. accordingly.

10 Repeat step 7 for the remaining

    parts.

    11 Polish the surface of the parts to

    obtain a better finishing.

    12 Measure the distance of gap ; Gap around the terminal

    between the terminal and the should not exceed 0.03mm

    plastics by using SMARTSCOPE.

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